Case for clinical thermometers



J. T. BURDEN.

I CASE FOR CLINICAL THERMOM ETERS.

APPLICATION FILED "18.12, 1921.

1,416,785. Patented M123, 1922.

UNHTE EL r,

CASE FOR CLINICAL THERMOMETERS.

i amass.

Specification of Letters Patent.

Patented stay 23, 2

Application filed February 12, 1921. Serial No. 444,819.

T 0 all whom it may concern:

Be it known that l, J OSEPH TOM'SON Boa DEN, of 89 Clerkenwell Road, London, E. C. 1, England, a British subject, have invented certain new and useful Improvements in or vl ielating to Cases for Clinical Thermometers of which the following is a specification. 7

This invention relates to cases for clinical thermometers of the kind adapted to be which the case may be supported during the twirling operation but this construction does not permit the case to be twirled with sutlicient force to enable the centrifugal action to drive back the mercury in the case of a finely constricted clinical thermometer. It has also been proposed to mount a clinical thermometer case by one of its ends to an Archimedean screw provided at its opposite end with means for holding it, a sleeve nut or the like being adapted to be reciprocated to cause revolution of the screw and twirling of the thermometer case bodily about the axis of the screw. In this case the weight overhangs to one side and is unbalanced so that the thermometer case cannot be twirled very rapidly and thus cannot be used to reset a finely constricted clinical thermometer.

The object of the present invention is to overcome these disadvantages and to -this end a clinical thermometer case has pivotally secured thereto an Archimedean screw and a finger grip one on each side of the case, the screw being pivoted so that it may be folded to lie alongside the case, whilst the finger grip is pivoted coaxially with the extended screw to permit rotation of the case relatively to the finger 'rip and a sleeve nut or the like is mounted to be reciprocated relatively to the screw.

Preferably the pivot pin of the finger grip is riveted to a collar formed from a strip of metal bent around and soldered or otherwise secured to a tubular thermometer case, the ends of said strip being brought together and constituting a lug to which is pivotally secured the end of the Archimedean screw, which is bifurcated to embrace said lug. The sleeve nut may consist of a piece of tubing of greater length than said screw having a nut ring soldered or screwed into one end thereof, whilst the screw itself may be read ily formed by twisting a length of steel of square cross-section and soldering or screwing its ends into collars one of which may he bifurcated for the pivotal. attachment to the lug as above set forth, and tire other of which may constitute a guide in the sleeve nut and a stop for engaging the nut ring to limit relative movement.

The invention will be described with reference to the accompanying drawings in which Figure 1 is an elevation showing the screw extended and Figure 2 is a plan.

a is a clinical thermometer case of usual pattern with a cap 7) and secured around said case a and adjacent to said cap 7) is a sleeve 0 provided at diametricallv opposite points with a transversely apertured lug (Z and a transverse pin 6 having a head 7". A finger grip, constituted by a ring 9 having a radially disposed sleeve it is pivot-ally mounted on the pin 0 by the sleeve 1, and is retained in position by the head 7". An Archimedian screw j, which may be formed by twisting a length of steel bar of square cross section, is bifurcated at one end as at is so as to embrace the lug (Z and is pivoted. thereto by means of a pin m.

A nut ring it engages with the screw j and is soldered or otherwise secured within one end of a tubular finger grip 0 so as to form a sleeve nut adapted to be moved axially of said screw. A shoulder or other stop 29 secured to the outer end of the screw j prevents the nut a and finger grip 0 from becoming detached from the screw 7' and the nut n and finger grip 0 are adapted to be moved along the screw j to the position shown by the broken lines 0 and with the screw to be folded about the pin m as shown by broken lines 0 (Figure 1) so as to facilitate carriage.

It is to be observed that in use the finger grip g and sleeve nut n, 0 are held in the hands of the operator and the thermometer case a is twirled in a plane lying between the two points of support, consequently the weight is evenly distributed, and the case may be readily twirled with sufiicient force to enable the centrifugal action to drive back the mercury column even in the most obstinate clinical thermometers. The twirling may be effected by reciprocating the sleeve nut 11-, 0 relatively to the screw j with one hand, or vice versa through the medium of the finger grip g with the other hand, or the hands of the operator may be simultaneously moved towards anc away iii-om one another, the twirling being n'iaintained for any de sired length of time with great facility.

I claim 1. A clinical thermometer case having an rtrchimedean screw and a. linger grip pivotally secured one on each side o'l said case said screw being adapted to be l'olded to lie alongside said case or to l extended at right angles thereto whilst said linger grip is pivoted to said case coaxially with the screw when the latter is disposed at a right angle to said case to permit rotation of said case i'elativelv to said linger grip and a sleeve nut threaded on said screw, said sleeve nut being adapted to be recirn'ocatetl rela tively to said screw.

2. A clinical therniomeer case having a strip of metal bent around and secured to said case, the ends of said strip being brought together and constituting a lug, an jirchimedean screw se ired to said lug and adapted to be 'lolded to lie alongside said case or to be extended at right angles there to. a linger grip rivetted to said strip on that side oi said case remote from said lug and pivoted coaxially with the screw when the latter is disposed at a right angle to said case and a sleeve nut threaded on said screw and adapted to be reciprocated relatively thereto.

3. A clinical thermometer case having an Archimedean screw and a linger grip pivotally secured. one on each side Oif said case said screw being adapted to be Folded to be alongside said case or to be extended at right angles thereto whilst said linger grip is pivoted to said case coaxiall with the screw when the latter is disposed at a right angle to said case, a hollow tubing adapted to encase said screwg and a nut ring secured to said tubing said nut ring threaded on and ada 'ited to be reciprocatcd reh'itively to said screw.

4:. clinical thermometer having a case,

l extended screw v-rhcn the latter is dis- ;esed at a right angle to said case a hollow Y secured to said tubing, said nut ring on and adapted to be reciprocated i "vely to said screw. 5. fr clinical thermometer case having an iircnin'iedean screw and a finger grip piv otailv secured one on each side of said case sai screw being formed by twisting a len r'ii section and being teel o't square cross ted to be tolded to lie alongside said ease or to be extended atright angles thereto whilst said linger grip is pivoted to said case coaxially with the screw when the latter is disposed at a right angle to said case a collar secured to the outer end of said screw and a sleeve nut threaded on said si-rew, said sleeve nut being adapted to be reciprocated relatively to said screw to an extent limited by said collar.

{3. A. clinical thermometer having a case, an irchimedean screw and a linger grip p'votally secured one on each side of said case said screw being termed by twisting a length of steel of square cross section and being adapted to be folded to lie along side said case, or to be extended at right angles thereto whilst said finger grip is pivoted to said case coaxially with the screw when the latter is disposed at aright angle to said case, a collar secured to said screw, a hollow tubii'ig adapted to encase said screw and a nutring secured to said. tubing said nut ring threaded on and adapted to be reriprocated relatively to said screw.

aosnrn Tor [son BURDEN.

ihin adapted to cncase said screen and a 

